at sea
困惑、迷失或不理解的狀態
口語·表示困惑或不知所措
英文釋義
to be confused or unsure about something
例句
After the professor's confusing explanation, I was completely at sea about the assignment.
典故來源
源自航海時代，水手在茫茫大海中失去方向感，比喻人在復雜情境中感到迷茫或困惑。